What Is the P1450 Code?
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A P1450 error code is an extension of OBD-II code P1. These codes are always displayed as P1XXX. The third numeral in the code sequence identifies where a vehicle’s OBD-II system has run into a problem. The number 4 indicates an issue with a vehicle’s auxiliary emission controls. This control system senses temperature, vehicle speed, engine RPM, transmission gear, manifold vacuum, and other vehicle parameters. As it pertains to OBD-II code P1450, your car’s Powertrain Control Module (PCM) has detected a malfunctioning fuel tank vacuum when the engine is on.
More About Error Code P1450
A P1450 DTC is triggered when the PCM is running a system monitor and detects an excessive vacuum in your car’s fuel tank or Evaporative Emissions Control System (EVAP). Your car’s PCM monitors the fuel tank’s fuel vapor and pressure. System malfunctions happen when the EVAP system’s running loss monitor detects excessive fuel tank vacuum with the engine running.
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What Are the Symptoms of a P1450 Code?
The only symptom associated with a P1450 DTC is the illumination of the check engine light. Since this is the only indicator of this code, many drivers don’t even know there’s a problem with their car’s fuel tank vacuum because this trouble code doesn’t result in a noticeable fuel odor.
What Are Some Causes of a P1450 Code?
There are many common causes associated with this error code. Most of these are directly related to your car’’s EVAP system. These factors include:
- A blocked EVAP canister or vent solenoid
- A defective tank pressure sensor
- A collapsed or kinked hose between the canister and fuel tank
- A fuel filler cap that has been stuck closed and prevents vacuum relief
How Serious Is the P1450 Code?
A P1450 error code only has one symptom, therefore it’s imperative that when your check engine light comes on, you have your car checked immediately. Aside from the illumination of your check engine light, this error code may also result in the uncontrolled release of hydrocarbons into the atmosphere, which could result in a failed emissions test.
Can I Still Drive with a P1450 Code?
We highly recommend you seek a full diagnosis as soon as possible. A P1450 DTC doesn’t mean there are any immediate mechanical problems with the car or impede its driveability. However, it’s important to get a proper diagnosis by a qualified professional, and perform any repairs to prevent any damage.
How Easy Is It to Diagnose a P1450 Code?
Qualified mechanics diagnose this code by starting their inspection at the EVAP canister or vent solenoid and look for blockage. Next, a mechanic will check the hose between the canister and the fuel tank and look for signs of a kinked hose, or a collapsed hose that may block the passage. After that they’ll check the fuel filler cap if it’s stuck closed. Then they’ll check the Fuel Tank Pressure Sensor.
How Difficult Is It to Inspect a P1450 Code?
More often than not, your mechanic will have to repair or replace the fuel filler cap. In some instances, a mechanic might have to repair or replace damaged or unhooked lines in the EVAP system. Your mechanic will also check the electrical components are properly hooked up as well.
Need Additional Help with Your P1450 Code?
If you need additional help regarding your P1450 error code, be sure to contact a qualified mechanic in your area. With an extensive list of service centers around the country, KBB.com makes it easy to find a mechanic near you.
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